I don't know where you looked but you were looking in the wrong place. An overwhelming majority of the studies ever conducted on the topic have found UV exposur

I don't know where you looked but you were looking in the wrong place. An overwhelming majority of the studies ever conducted on the topic have found UV exposure to increase skin cancer risk. In fact, most studies are more interested in the mechanisms now than the risks, since the risks have been known for 50 years. Look through the list of papers here: http://scholar.google.com.au/scholar?q=uv+exposure+malignant+melanoma+risk&btnG=&hl=en&as_sdt=0%2C5 http://scholar.google.com.au/scholar?q=uv+exposure+malignant... If you want a really simple summary, from this meta study in 1997: http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1097-0215(19971009)73:2%3C198::AID-IJC6%3E3.0.CO;2-R/full http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1097-0215(1... > There was a significantly increased risk with sunburn at all ages or in adult life (OR = 1.91) and similarly elevated relative risks for sunburn in adolescence (OR = 1.73) and in childhood (OR = 1.95). Basically, if you have a history of sunburn (at any age) you nearly double the chance of getting malignant melanoma (the most deadly form of skin cancer). And here's one: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2363407/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2363407/ That indicates an 80% elevated risk of malignant melanoma from using sun tanning beds.